I2C Overview

Optimize I2C signals, increase system reliability, and extend system functionality

Level Shifters, Buffers, and Hubs

Strengthen your I2C bus signal and resolve voltage mismatch

General Purpose I/O (GPIO) Expanders

Increase the number of available I2C I/O pins

Switches and Multiplexers

Expand the capability of your control system by switching between I2C buses

Isolated I2C

Extend industrial isolation lifetime with low-power, bidirectional I2C isolators

Keypad Controllers and LED Drivers

Enable designs with I2C-based keypad scanners and LED drivers

Featured products


Level-Translating I2C Bus Buffer/Repeater


2-Bit Bidirectional I2C Bus and SMBus Voltage-Level Shifter


Remote 16-Bit I2C and SMBus, Low-Power I/O Expander With Interrupt Output and Configuartion Registers

Technical resources

Technical documents to help you understand the I2C bus and select parts for your design.

Ask questions, share knowledge and help solve problems with fellow engineers in TI’s E2E™ Community.

Search for any suppliers’ I2C devices to find similar TI I2C devices.

Read about a wide variety of I2C system design topics in TI’s blogs.